It was alright, but I think I would rather play Trigger Knight. Granted this has 'levels' and the such, Trigger Knight just feels more fun to play.
Some advice, you might want to slow down the background upgrades. They, and other items such as chests, kittens, and traps, all scroll by way too fast, you can't even read the description on them and some of the enemies because they die too quickly.
One last thing. Apparently I got an achievement for doing the tutorial, but I never did it. I think it might be broken.